diff --git a/datasource-decorator-spring-boot-autoconfigure/src/main/java/com/github/gavlyukovskiy/boot/jdbc/decorator/p6spy/P6SpyConfiguration.java b/datasource-decorator-spring-boot-autoconfigure/src/main/java/com/github/gavlyukovskiy/boot/jdbc/decorator/p6spy/P6SpyConfiguration.java
index c867669..5988b6e 100644
--- a/datasource-decorator-spring-boot-autoconfigure/src/main/java/com/github/gavlyukovskiy/boot/jdbc/decorator/p6spy/P6SpyConfiguration.java
+++ b/datasource-decorator-spring-boot-autoconfigure/src/main/java/com/github/gavlyukovskiy/boot/jdbc/decorator/p6spy/P6SpyConfiguration.java
@@ -103,7 +103,7 @@ else if (p6spy.isMultiline()) {
                     System.setProperty("p6spy.config.appender", "com.p6spy.engine.spy.appender.FileLogger");
                     break;
                 case CUSTOM:
-                    System.setProperty("p6spy.config.appender", p6spy.getCustomAppenderClass().getName());
+                    System.setProperty("p6spy.config.appender", p6spy.getCustomAppenderClass());
                     break;
             }
         }
diff --git a/datasource-decorator-spring-boot-autoconfigure/src/main/java/com/github/gavlyukovskiy/boot/jdbc/decorator/p6spy/P6SpyProperties.java b/datasource-decorator-spring-boot-autoconfigure/src/main/java/com/github/gavlyukovskiy/boot/jdbc/decorator/p6spy/P6SpyProperties.java
index 907e07e..66c8bc1 100644
--- a/datasource-decorator-spring-boot-autoconfigure/src/main/java/com/github/gavlyukovskiy/boot/jdbc/decorator/p6spy/P6SpyProperties.java
+++ b/datasource-decorator-spring-boot-autoconfigure/src/main/java/com/github/gavlyukovskiy/boot/jdbc/decorator/p6spy/P6SpyProperties.java
@@ -64,7 +64,7 @@ public class P6SpyProperties {
      * Class file to use (only with logging=custom).
      * The class must implement {@link com.p6spy.engine.spy.appender.FormattedLogger}
      */
-    private Class<? extends FormattedLogger> customAppenderClass;
+    private String customAppenderClass;
 
     /**
      * Log filtering related properties.